feat(floor2): wire up all three second-floor rooms with navigation arrows

docs/superpowers/plans/2026-04-17-sprint-11-13-zweites-obergeschoss.md

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+# Sprint 11-13: 2. Obergeschoss — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Three fully interactive second-floor rooms (Ultrasound with continuous heartbeat animation, Delivery Room with mama-arrives animation, Nursery with rocking cradles) wired into Main.tscn.
+
+**Architecture:** Floor 2 follows the same side-by-side layout — three rooms at X offsets 0, 1280, 2560 within the `Floor2` node (Floor 2 has only 3 rooms, unlike Floors 0 and 1 which have 4). Two new animated components are introduced: `UltrasoundMachine` (continuous looping heartbeat tween) and `DeliveryBed` (4-state FSM: mama slides in, baby fades in, tap again to reset). `Cradle` adds a rocking rotation animation on tap. `Main.tscn` is updated to replace the Floor 2 placeholder nodes with the real rooms.
+
+**Tech Stack:** Godot 4.6.2, GDScript (static typing), existing `InteractiveObject` base class, placeholder ColorRect graphics.
+
+---
+
+## File Map
+
+| Action | File | Responsibility |
+|--------|------|----------------|
+| Create | `scripts/objects/ultrasound_machine.gd` | Continuous heartbeat pulse animation (looping tween, no tap required) |
+| Create | `scenes/objects/UltrasoundMachine.tscn` | Machine body + screen + pulsing HeartbeatDot Node2D |
+| Create | `scripts/objects/delivery_bed.gd` | 4-state FSM: IDLE → MAMA_ARRIVING → COMPLETE → RESETTING |
+| Create | `scenes/objects/DeliveryBed.tscn` | Bed frame + Mama Node2D (slides in) + Baby Node2D (fades in) |
+| Create | `scripts/objects/cradle.gd` | Rocking rotation animation on tap (2-state FSM) |
+| Create | `scenes/objects/Cradle.tscn` | Hanging cradle with suspension ropes and basket |
+| Create | `scenes/rooms/floor2/Ultrasound.tscn` | Exam table, UltrasoundMachine, 2 interactive objects |
+| Create | `scenes/rooms/floor2/DeliveryRoom.tscn` | DeliveryBed component, 2 interactive objects |
+| Create | `scenes/rooms/floor2/Nursery.tscn` | Rail + 3 Cradle instances, 2 interactive objects |
+| Modify | `scenes/main/Main.tscn` | Replace Floor2 placeholder with 3 rooms + nav arrows; fix elevator position |
+
+**Room layout in Floor2 (local X positions):**
+- Ultrasound: x=0 (room index 0) — camera center world (640, -1080)
+- DeliveryRoom: x=1280 (room index 1) — camera center world (1920, -1080)
+- Nursery: x=2560 (room index 2) — camera center world (3200, -1080)
+- *(No room 3 — Floor 2 has only 3 rooms)*
+
+**Floor2 elevator (top floor — no up button):**
+- ElevatorDown2: position (1100, 540) → target_floor = 1
+
+**NavigationArrows in Floor2 (4 total for 2 boundaries):**
+
+| Node | X | Y | target_floor | target_room | label |
+|------|---|---|---|---|---|
+| NavRight0to1_F2 | 1200 | 480 | 2 | 1 | → |
+| NavLeft1to0_F2 | 1340 | 480 | 2 | 0 | ← |
+| NavRight1to2_F2 | 2480 | 480 | 2 | 2 | → |
+| NavLeft2to1_F2 | 2600 | 480 | 2 | 1 | ← |
+
+**UltrasoundMachine visual layout (local space, origin = machine base center):**
+- MachineBody: grey ColorRect 80×160 at (-40, -160) — tall standing machine
+- ScreenFrame: dark ColorRect 68×52 at (-34, -152) — 4px border around screen
+- Screen: very dark ColorRect 60×44 at (-30, -148) — display area
+- HeartbeatDot: Node2D at (0, -126) — center of Screen; scales up/down for pulse
+- HeartbeatShape: bright green ColorRect 12×12 at (-6, -6) child of HeartbeatDot
+- Probe: grey ColorRect 14×80 at (-7, -30) — ultrasound probe below arm
+
+**DeliveryBed visual layout (local space, origin = center of bed frame):**
+- BedFrame: ColorRect 260×50 at (-130, -50) — bed surface
+- BedPillow: ColorRect 80×50 at (-130, -100) — head of bed
+- BedLeg1: ColorRect 14×120 at (-120, 0)
+- BedLeg2: ColorRect 14×120 at (106, 0)
+- Mama: Node2D starts at (-600, 0), parks at (-100, 0)
+  - MamaBody: ColorRect 60×100 at (-30, -100) child of Mama
+  - MamaHead: ColorRect 50×50 at (-25, -150) child of Mama
+- Baby: Node2D at (0, -80), starts invisible (modulate.a = 0.0)
+  - BabyBody: ColorRect 40×30 at (-20, -15) child of Baby
+
+**Cradle visual layout (local space, origin = top attachment point, pivot for rocking):**
+- SuspensionLeft: ColorRect 4×50 at (-25, 0) — rope going down-left
+- SuspensionRight: ColorRect 4×50 at (21, 0) — rope going down-right
+- CradleBasket: ColorRect 70×40 at (-35, 50) — cradle body
+- CradleRim: ColorRect 70×8 at (-35, 46) — top rim of basket
+- BabyBlanket: ColorRect 58×22 at (-29, 56) — blanket inside basket
+
+---
+
+## Task 1: UltrasoundMachine component
+
+**Files:**
+- Create: `scripts/objects/ultrasound_machine.gd`
+- Create: `scenes/objects/UltrasoundMachine.tscn`
+
+The heartbeat runs automatically on scene load — no tap required. The HeartbeatDot Node2D scales up then back down on a looping tween.
+
+- [ ] **Step 1: Create ultrasound_machine.gd**
+
+```gdscript
+## UltrasoundMachine — displays a continuous heartbeat pulse on the screen.
+class_name UltrasoundMachine extends Node2D
+
+const BEAT_RISE_DURATION: float = 0.12
+const BEAT_FALL_DURATION: float = 0.12
+const BEAT_INTERVAL: float = 0.60
+const BEAT_SCALE_PEAK: Vector2 = Vector2(1.5, 1.5)
+const BEAT_SCALE_REST: Vector2 = Vector2(1.0, 1.0)
+
+
+func _ready() -> void:
+	_start_heartbeat_loop()
+
+
+func _start_heartbeat_loop() -> void:
+	var dot: Node2D = get_node_or_null("HeartbeatDot") as Node2D
+	if dot == null:
+		return
+	var tween: Tween = create_tween()
+	tween.set_loops()
+	tween.tween_property(dot, "scale", BEAT_SCALE_PEAK, BEAT_RISE_DURATION)
+	tween.tween_property(dot, "scale", BEAT_SCALE_REST, BEAT_FALL_DURATION)
+	tween.tween_interval(BEAT_INTERVAL)
+```
+
+- [ ] **Step 2: Create UltrasoundMachine.tscn**
+
+```
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_ultrasoundmachine"]
+
+[ext_resource type="Script" path="res://scripts/objects/ultrasound_machine.gd" id="1_ultrasound"]
+
+[node name="UltrasoundMachine" type="Node2D"]
+script = ExtResource("1_ultrasound")
+
+[node name="MachineBody" type="ColorRect" parent="."]
+color = Color(0.68, 0.70, 0.76, 1)
+size = Vector2(80, 160)
+position = Vector2(-40, -160)
+
+[node name="ScreenFrame" type="ColorRect" parent="."]
+color = Color(0.30, 0.32, 0.36, 1)
+size = Vector2(68, 52)
+position = Vector2(-34, -152)
+
+[node name="Screen" type="ColorRect" parent="."]
+color = Color(0.06, 0.08, 0.12, 1)
+size = Vector2(60, 44)
+position = Vector2(-30, -148)
+
+[node name="HeartbeatDot" type="Node2D" parent="."]
+position = Vector2(0, -126)
+
+[node name="HeartbeatShape" type="ColorRect" parent="HeartbeatDot"]
+color = Color(0.40, 0.95, 0.60, 1)
+size = Vector2(12, 12)
+position = Vector2(-6, -6)
+
+[node name="Probe" type="ColorRect" parent="."]
+color = Color(0.55, 0.57, 0.62, 1)
+size = Vector2(14, 80)
+position = Vector2(-7, -30)
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scripts/objects/ultrasound_machine.gd scenes/objects/UltrasoundMachine.tscn
+git commit -m "feat(ultrasound): add UltrasoundMachine component with continuous heartbeat animation"
+```
+
+---
+
+## Task 2: DeliveryBed component
+
+**Files:**
+- Create: `scripts/objects/delivery_bed.gd`
+- Create: `scenes/objects/DeliveryBed.tscn`
+
+Tap the bed → Mama slides in from left → Baby fades in on the bed. Tap again → Mama slides out, Baby fades out. Tapping during animation is ignored.
+
+- [ ] **Step 1: Create delivery_bed.gd**
+
+```gdscript
+## DeliveryBed — tap to animate mama arriving and baby appearing; tap again to reset.
+class_name DeliveryBed extends Node2D
+
+enum State { IDLE, MAMA_ARRIVING, COMPLETE, RESETTING }
+
+const MAMA_OFFSCREEN_X: float = -600.0
+const MAMA_PARKED_X: float = -100.0
+const ARRIVE_DURATION: float = 1.0
+const BABY_FADE_DURATION: float = 0.6
+const RESET_DURATION: float = 0.8
+const BUTTON_HALF_WIDTH: float = 120.0
+const BUTTON_HALF_HEIGHT: float = 40.0
+
+var _state: State = State.IDLE
+
+
+func _ready() -> void:
+	var mama: Node2D = get_node_or_null("Mama") as Node2D
+	if mama != null:
+		mama.position.x = MAMA_OFFSCREEN_X
+	var baby: Node2D = get_node_or_null("Baby") as Node2D
+	if baby != null:
+		baby.modulate.a = 0.0
+
+
+func _input(event: InputEvent) -> void:
+	if _state == State.MAMA_ARRIVING or _state == State.RESETTING:
+		return
+	var screen_pos: Vector2
+	if event is InputEventScreenTouch and event.pressed:
+		screen_pos = event.position
+	elif event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+		screen_pos = event.position
+	else:
+		return
+	var canvas_transform: Transform2D = get_viewport().get_canvas_transform()
+	var world_pos: Vector2 = canvas_transform.affine_inverse() * screen_pos
+	var local_pos: Vector2 = to_local(world_pos)
+	if abs(local_pos.x) <= BUTTON_HALF_WIDTH and abs(local_pos.y) <= BUTTON_HALF_HEIGHT:
+		if _state == State.IDLE:
+			_start_arrival()
+		elif _state == State.COMPLETE:
+			_start_reset()
+
+
+func _start_arrival() -> void:
+	_state = State.MAMA_ARRIVING
+	var mama: Node2D = get_node_or_null("Mama") as Node2D
+	if mama == null:
+		_state = State.IDLE
+		return
+	var tween: Tween = create_tween()
+	tween.set_ease(Tween.EASE_OUT)
+	tween.set_trans(Tween.TRANS_QUAD)
+	tween.tween_property(mama, "position:x", MAMA_PARKED_X, ARRIVE_DURATION)
+	tween.finished.connect(_on_mama_arrived)
+
+
+func _on_mama_arrived() -> void:
+	_state = State.COMPLETE
+	var baby: Node2D = get_node_or_null("Baby") as Node2D
+	if baby == null:
+		return
+	var tween: Tween = create_tween()
+	tween.tween_property(baby, "modulate:a", 1.0, BABY_FADE_DURATION)
+
+
+func _start_reset() -> void:
+	_state = State.RESETTING
+	var baby: Node2D = get_node_or_null("Baby") as Node2D
+	if baby != null:
+		var fade_tween: Tween = create_tween()
+		fade_tween.tween_property(baby, "modulate:a", 0.0, BABY_FADE_DURATION)
+	var mama: Node2D = get_node_or_null("Mama") as Node2D
+	if mama == null:
+		_state = State.IDLE
+		return
+	var slide_tween: Tween = create_tween()
+	slide_tween.set_ease(Tween.EASE_IN)
+	slide_tween.set_trans(Tween.TRANS_QUAD)
+	slide_tween.tween_property(mama, "position:x", MAMA_OFFSCREEN_X, RESET_DURATION)
+	slide_tween.finished.connect(func() -> void: _state = State.IDLE)
+```
+
+- [ ] **Step 2: Create DeliveryBed.tscn**
+
+```
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_deliverybed"]
+
+[ext_resource type="Script" path="res://scripts/objects/delivery_bed.gd" id="1_deliverybed"]
+
+[node name="DeliveryBed" type="Node2D"]
+script = ExtResource("1_deliverybed")
+
+[node name="BedFrame" type="ColorRect" parent="."]
+color = Color(0.85, 0.85, 0.90, 1)
+size = Vector2(260, 50)
+position = Vector2(-130, -50)
+
+[node name="BedPillow" type="ColorRect" parent="."]
+color = Color(0.96, 0.96, 1.0, 1)
+size = Vector2(80, 50)
+position = Vector2(-130, -100)
+
+[node name="BedLeg1" type="ColorRect" parent="."]
+color = Color(0.70, 0.70, 0.76, 1)
+size = Vector2(14, 120)
+position = Vector2(-120, 0)
+
+[node name="BedLeg2" type="ColorRect" parent="."]
+color = Color(0.70, 0.70, 0.76, 1)
+size = Vector2(14, 120)
+position = Vector2(106, 0)
+
+[node name="Mama" type="Node2D" parent="."]
+position = Vector2(-600, 0)
+
+[node name="MamaBody" type="ColorRect" parent="Mama"]
+color = Color(0.92, 0.75, 0.65, 1)
+size = Vector2(60, 100)
+position = Vector2(-30, -100)
+
+[node name="MamaHead" type="ColorRect" parent="Mama"]
+color = Color(0.92, 0.75, 0.65, 1)
+size = Vector2(50, 50)
+position = Vector2(-25, -150)
+
+[node name="Baby" type="Node2D" parent="."]
+position = Vector2(0, -80)
+
+[node name="BabyBody" type="ColorRect" parent="Baby"]
+color = Color(0.96, 0.88, 0.82, 1)
+size = Vector2(40, 30)
+position = Vector2(-20, -15)
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scripts/objects/delivery_bed.gd scenes/objects/DeliveryBed.tscn
+git commit -m "feat(delivery): add DeliveryBed component with mama-arrives baby-appears animation"
+```
+
+---
+
+## Task 3: Cradle component
+
+**Files:**
+- Create: `scripts/objects/cradle.gd`
+- Create: `scenes/objects/Cradle.tscn`
+
+Tap the cradle → it rocks (rotates ±15°). The origin is at the top attachment point, so rotation creates a natural pendulum swing. Tapping during rocking is ignored.
+
+- [ ] **Step 1: Create cradle.gd**
+
+```gdscript
+## Cradle — rocks with a pendulum rotation when tapped.
+class_name Cradle extends Node2D
+
+enum State { IDLE, ROCKING }
+
+const ROCK_ANGLE: float = 15.0
+const ROCK_DURATION: float = 0.5
+const BUTTON_HALF_SIZE: float = 80.0
+
+var _state: State = State.IDLE
+
+
+func _input(event: InputEvent) -> void:
+	if _state != State.IDLE:
+		return
+	var screen_pos: Vector2
+	if event is InputEventScreenTouch and event.pressed:
+		screen_pos = event.position
+	elif event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+		screen_pos = event.position
+	else:
+		return
+	var canvas_transform: Transform2D = get_viewport().get_canvas_transform()
+	var world_pos: Vector2 = canvas_transform.affine_inverse() * screen_pos
+	var local_pos: Vector2 = to_local(world_pos)
+	if abs(local_pos.x) <= BUTTON_HALF_SIZE and abs(local_pos.y) <= BUTTON_HALF_SIZE:
+		_start_rocking()
+
+
+func _start_rocking() -> void:
+	_state = State.ROCKING
+	var tween: Tween = create_tween()
+	tween.set_ease(Tween.EASE_IN_OUT)
+	tween.set_trans(Tween.TRANS_SINE)
+	tween.tween_property(self, "rotation_degrees", ROCK_ANGLE, ROCK_DURATION)
+	tween.tween_property(self, "rotation_degrees", -ROCK_ANGLE, ROCK_DURATION)
+	tween.tween_property(self, "rotation_degrees", 0.0, ROCK_DURATION * 0.5)
+	tween.finished.connect(func() -> void: _state = State.IDLE)
+```
+
+- [ ] **Step 2: Create Cradle.tscn**
+
+```
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_cradle"]
+
+[ext_resource type="Script" path="res://scripts/objects/cradle.gd" id="1_cradle"]
+
+[node name="Cradle" type="Node2D"]
+script = ExtResource("1_cradle")
+
+[node name="SuspensionLeft" type="ColorRect" parent="."]
+color = Color(0.75, 0.65, 0.50, 1)
+size = Vector2(4, 50)
+position = Vector2(-25, 0)
+
+[node name="SuspensionRight" type="ColorRect" parent="."]
+color = Color(0.75, 0.65, 0.50, 1)
+size = Vector2(4, 50)
+position = Vector2(21, 0)
+
+[node name="CradleBasket" type="ColorRect" parent="."]
+color = Color(0.88, 0.82, 0.72, 1)
+size = Vector2(70, 40)
+position = Vector2(-35, 50)
+
+[node name="CradleRim" type="ColorRect" parent="."]
+color = Color(0.95, 0.90, 0.82, 1)
+size = Vector2(70, 8)
+position = Vector2(-35, 46)
+
+[node name="BabyBlanket" type="ColorRect" parent="."]
+color = Color(0.90, 0.84, 0.96, 1)
+size = Vector2(58, 22)
+position = Vector2(-29, 56)
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scripts/objects/cradle.gd scenes/objects/Cradle.tscn
+git commit -m "feat(nursery): add Cradle component with pendulum rocking animation"
+```
+
+---
+
+## Task 4: Ultrasound room scene
+
+**Files:**
+- Create: `scenes/rooms/floor2/Ultrasound.tscn`
+
+- [ ] **Step 1: Create Ultrasound.tscn**
+
+```
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_ultrasound"]
+
+[ext_resource type="PackedScene" path="res://scenes/objects/InteractiveObject.tscn" id="1_iobj"]
+[ext_resource type="PackedScene" path="res://scenes/objects/UltrasoundMachine.tscn" id="2_ultrasound"]
+
+[node name="Ultrasound" type="Node2D"]
+
+[node name="Background" type="ColorRect" parent="."]
+color = Color(0.92, 0.90, 0.96, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="Floor" type="ColorRect" parent="."]
+color = Color(0.80, 0.78, 0.84, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="WallLeft" type="ColorRect" parent="."]
+color = Color(0.90, 0.88, 0.94, 1)
+size = Vector2(40, 620)
+position = Vector2(0, 0)
+
+[node name="WallRight" type="ColorRect" parent="."]
+color = Color(0.90, 0.88, 0.94, 1)
+size = Vector2(40, 620)
+position = Vector2(1240, 0)
+
+[node name="ExamTable" type="ColorRect" parent="."]
+color = Color(0.84, 0.86, 0.90, 1)
+size = Vector2(340, 40)
+position = Vector2(300, 490)
+
+[node name="ExamTableLeg1" type="ColorRect" parent="."]
+color = Color(0.65, 0.68, 0.74, 1)
+size = Vector2(16, 130)
+position = Vector2(320, 530)
+
+[node name="ExamTableLeg2" type="ColorRect" parent="."]
+color = Color(0.65, 0.68, 0.74, 1)
+size = Vector2(16, 130)
+position = Vector2(608, 530)
+
+[node name="CharacterSpawn" type="Marker2D" parent="."]
+position = Vector2(160, 490)
+
+[node name="UltrasoundMachine" parent="." instance=ExtResource("2_ultrasound")]
+position = Vector2(780, 490)
+
+[node name="GelBottle" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(920, 450)
+
+[node name="Blanket" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(480, 450)
+```
+
+- [ ] **Step 2: Commit**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scenes/rooms/floor2/Ultrasound.tscn
+git commit -m "feat(ultrasound): add Ultrasound room with exam table and UltrasoundMachine"
+```
+
+---
+
+## Task 5: DeliveryRoom scene
+
+**Files:**
+- Create: `scenes/rooms/floor2/DeliveryRoom.tscn`
+
+- [ ] **Step 1: Create DeliveryRoom.tscn**
+
+```
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_deliveryroom"]
+
+[ext_resource type="PackedScene" path="res://scenes/objects/InteractiveObject.tscn" id="1_iobj"]
+[ext_resource type="PackedScene" path="res://scenes/objects/DeliveryBed.tscn" id="2_deliverybed"]
+
+[node name="DeliveryRoom" type="Node2D"]
+
+[node name="Background" type="ColorRect" parent="."]
+color = Color(0.98, 0.92, 0.94, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="Floor" type="ColorRect" parent="."]
+color = Color(0.90, 0.82, 0.76, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="WallLeft" type="ColorRect" parent="."]
+color = Color(0.96, 0.90, 0.92, 1)
+size = Vector2(40, 620)
+position = Vector2(0, 0)
+
+[node name="WallRight" type="ColorRect" parent="."]
+color = Color(0.96, 0.90, 0.92, 1)
+size = Vector2(40, 620)
+position = Vector2(1240, 0)
+
+[node name="CharacterSpawn" type="Marker2D" parent="."]
+position = Vector2(160, 490)
+
+[node name="DeliveryBed" parent="." instance=ExtResource("2_deliverybed")]
+position = Vector2(540, 490)
+
+[node name="FlowerVase" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(1020, 540)
+
+[node name="BabyBlanket" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(880, 540)
+```
+
+- [ ] **Step 2: Commit**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scenes/rooms/floor2/DeliveryRoom.tscn
+git commit -m "feat(delivery): add DeliveryRoom with animated DeliveryBed"
+```
+
+---
+
+## Task 6: Nursery scene
+
+**Files:**
+- Create: `scenes/rooms/floor2/Nursery.tscn`
+
+The CradleRail is a horizontal bar that the cradles visually hang from. The three Cradle origins (top attachment points) are positioned at y=240, just below the rail bottom edge (rail top at y=228, size.y=12 → bottom at y=240).
+
+- [ ] **Step 1: Create Nursery.tscn**
+
+```
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_nursery"]
+
+[ext_resource type="PackedScene" path="res://scenes/objects/InteractiveObject.tscn" id="1_iobj"]
+[ext_resource type="PackedScene" path="res://scenes/objects/Cradle.tscn" id="2_cradle"]
+
+[node name="Nursery" type="Node2D"]
+
+[node name="Background" type="ColorRect" parent="."]
+color = Color(0.96, 0.96, 0.84, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="Floor" type="ColorRect" parent="."]
+color = Color(0.88, 0.84, 0.70, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="WallLeft" type="ColorRect" parent="."]
+color = Color(0.94, 0.94, 0.82, 1)
+size = Vector2(40, 620)
+position = Vector2(0, 0)
+
+[node name="WallRight" type="ColorRect" parent="."]
+color = Color(0.94, 0.94, 0.82, 1)
+size = Vector2(40, 620)
+position = Vector2(1240, 0)
+
+[node name="CradleRail" type="ColorRect" parent="."]
+color = Color(0.75, 0.65, 0.50, 1)
+size = Vector2(800, 12)
+position = Vector2(200, 228)
+
+[node name="CharacterSpawn" type="Marker2D" parent="."]
+position = Vector2(160, 490)
+
+[node name="Cradle1" parent="." instance=ExtResource("2_cradle")]
+position = Vector2(340, 240)
+
+[node name="Cradle2" parent="." instance=ExtResource("2_cradle")]
+position = Vector2(600, 240)
+
+[node name="Cradle3" parent="." instance=ExtResource("2_cradle")]
+position = Vector2(860, 240)
+
+[node name="TeddyBear" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(1100, 540)
+
+[node name="MilkBottle" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(960, 540)
+```
+
+- [ ] **Step 2: Commit**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scenes/rooms/floor2/Nursery.tscn
+git commit -m "feat(nursery): add Nursery room with rail and three rocking cradles"
+```
+
+---
+
+## Task 7: Update Main.tscn — wire up Floor 2
+
+**Files:**
+- Modify: `scenes/main/Main.tscn`
+
+**Changes from current file:**
+1. `load_steps` increases from 17 → 20 (add 3 new ext_resources: Ultrasound, DeliveryRoom, Nursery)
+2. Add 3 new ext_resource declarations (ids 16–18)
+3. In the Floor2 section: **remove** the placeholder `Background`, `FloorLabel`, `FloorRect` nodes
+4. **Add** 3 room instances to Floor2 at x offsets 0, 1280, 2560 *(no room 3)*
+5. **Move** ElevatorDown2 from (1200, 360) → (1100, 540) *(consistent with Floor1 pattern)*
+6. **Add** 4 NavigationArrow instances for Floor2 room navigation *(only 2 boundaries, not 3)*
+
+**load_steps arithmetic:** 15 existing ext_resources + 3 new = 18 ext_resources + 1 sub_resource + 1 scene root = 20.
+
+- [ ] **Step 1: Read current Main.tscn**
+
+Read `F:/Development/_gameDev/Cozypaw-Hospital/scenes/main/Main.tscn` to confirm current state before writing.
+
+- [ ] **Step 2: Write the complete new Main.tscn**
+
+```
+[gd_scene load_steps=20 format=3 uid="uid://cozypaw_main"]
+
+[ext_resource type="Script" path="res://scripts/main/main.gd" id="1_main"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor0/Reception.tscn" id="2_reception"]
+[ext_resource type="PackedScene" path="res://scenes/characters/Character.tscn" id="3_char"]
+[ext_resource type="PackedScene" path="res://scenes/ui/HUD.tscn" id="4_hud"]
+[ext_resource type="PackedScene" path="res://scenes/ui/SettingsMenu.tscn" id="5_settings"]
+[ext_resource type="PackedScene" path="res://scenes/objects/ElevatorButton.tscn" id="6_elevbtn"]
+[ext_resource type="Script" path="res://scripts/characters/character_data.gd" id="7_chardata"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor0/GiftShop.tscn" id="8_giftshop"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor0/Restaurant.tscn" id="9_restaurant"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor0/EmergencyRoom.tscn" id="10_emergency"]
+[ext_resource type="PackedScene" path="res://scenes/objects/NavigationArrow.tscn" id="11_navarrow"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor1/XRay.tscn" id="12_xray"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor1/Pharmacy.tscn" id="13_pharmacy"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor1/Lab.tscn" id="14_lab"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor1/PatientRoom.tscn" id="15_patientroom"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor2/Ultrasound.tscn" id="16_ultrasound"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor2/DeliveryRoom.tscn" id="17_delivery"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor2/Nursery.tscn" id="18_nursery"]
+
+[sub_resource type="Resource" id="CharacterData_bunny1"]
+script = ExtResource("7_chardata")
+id = "bunny_01"
+display_name = "Bunny"
+species = 0
+state = 0
+current_floor = 0
+position = Vector2(0, 0)
+
+[node name="Main" type="Node2D"]
+script = ExtResource("1_main")
+
+[node name="Camera2D" type="Camera2D" parent="."]
+position = Vector2(640, 360)
+zoom = Vector2(1, 1)
+
+[node name="Hospital" type="Node2D" parent="."]
+
+[node name="Floor0" type="Node2D" parent="Hospital"]
+position = Vector2(0, 0)
+
+[node name="Reception" parent="Hospital/Floor0" instance=ExtResource("2_reception")]
+position = Vector2(0, 0)
+
+[node name="GiftShop" parent="Hospital/Floor0" instance=ExtResource("8_giftshop")]
+position = Vector2(1280, 0)
+
+[node name="Restaurant" parent="Hospital/Floor0" instance=ExtResource("9_restaurant")]
+position = Vector2(2560, 0)
+
+[node name="EmergencyRoom" parent="Hospital/Floor0" instance=ExtResource("10_emergency")]
+position = Vector2(3840, 0)
+
+[node name="ElevatorUp0" parent="Hospital/Floor0" instance=ExtResource("6_elevbtn")]
+position = Vector2(1100, 160)
+target_floor = 1
+
+[node name="NavRight0to1" parent="Hospital/Floor0" instance=ExtResource("11_navarrow")]
+position = Vector2(1200, 480)
+target_floor = 0
+target_room = 1
+label_text = "→"
+
+[node name="NavLeft1to0" parent="Hospital/Floor0" instance=ExtResource("11_navarrow")]
+position = Vector2(1340, 480)
+target_floor = 0
+target_room = 0
+label_text = "←"
+
+[node name="NavRight1to2" parent="Hospital/Floor0" instance=ExtResource("11_navarrow")]
+position = Vector2(2480, 480)
+target_floor = 0
+target_room = 2
+label_text = "→"
+
+[node name="NavLeft2to1" parent="Hospital/Floor0" instance=ExtResource("11_navarrow")]
+position = Vector2(2600, 480)
+target_floor = 0
+target_room = 1
+label_text = "←"
+
+[node name="NavRight2to3" parent="Hospital/Floor0" instance=ExtResource("11_navarrow")]
+position = Vector2(3760, 480)
+target_floor = 0
+target_room = 3
+label_text = "→"
+
+[node name="NavLeft3to2" parent="Hospital/Floor0" instance=ExtResource("11_navarrow")]
+position = Vector2(3920, 480)
+target_floor = 0
+target_room = 2
+label_text = "←"
+
+[node name="Floor1" type="Node2D" parent="Hospital"]
+position = Vector2(0, -720)
+
+[node name="XRay" parent="Hospital/Floor1" instance=ExtResource("12_xray")]
+position = Vector2(0, 0)
+
+[node name="Pharmacy" parent="Hospital/Floor1" instance=ExtResource("13_pharmacy")]
+position = Vector2(1280, 0)
+
+[node name="Lab" parent="Hospital/Floor1" instance=ExtResource("14_lab")]
+position = Vector2(2560, 0)
+
+[node name="PatientRoom" parent="Hospital/Floor1" instance=ExtResource("15_patientroom")]
+position = Vector2(3840, 0)
+
+[node name="ElevatorDown1" parent="Hospital/Floor1" instance=ExtResource("6_elevbtn")]
+position = Vector2(1100, 540)
+target_floor = 0
+
+[node name="ElevatorUp1" parent="Hospital/Floor1" instance=ExtResource("6_elevbtn")]
+position = Vector2(1100, 180)
+target_floor = 2
+
+[node name="NavRight0to1_F1" parent="Hospital/Floor1" instance=ExtResource("11_navarrow")]
+position = Vector2(1200, 480)
+target_floor = 1
+target_room = 1
+label_text = "→"
+
+[node name="NavLeft1to0_F1" parent="Hospital/Floor1" instance=ExtResource("11_navarrow")]
+position = Vector2(1340, 480)
+target_floor = 1
+target_room = 0
+label_text = "←"
+
+[node name="NavRight1to2_F1" parent="Hospital/Floor1" instance=ExtResource("11_navarrow")]
+position = Vector2(2480, 480)
+target_floor = 1
+target_room = 2
+label_text = "→"
+
+[node name="NavLeft2to1_F1" parent="Hospital/Floor1" instance=ExtResource("11_navarrow")]
+position = Vector2(2600, 480)
+target_floor = 1
+target_room = 1
+label_text = "←"
+
+[node name="NavRight2to3_F1" parent="Hospital/Floor1" instance=ExtResource("11_navarrow")]
+position = Vector2(3760, 480)
+target_floor = 1
+target_room = 3
+label_text = "→"
+
+[node name="NavLeft3to2_F1" parent="Hospital/Floor1" instance=ExtResource("11_navarrow")]
+position = Vector2(3920, 480)
+target_floor = 1
+target_room = 2
+label_text = "←"
+
+[node name="Floor2" type="Node2D" parent="Hospital"]
+position = Vector2(0, -1440)
+
+[node name="Ultrasound" parent="Hospital/Floor2" instance=ExtResource("16_ultrasound")]
+position = Vector2(0, 0)
+
+[node name="DeliveryRoom" parent="Hospital/Floor2" instance=ExtResource("17_delivery")]
+position = Vector2(1280, 0)
+
+[node name="Nursery" parent="Hospital/Floor2" instance=ExtResource("18_nursery")]
+position = Vector2(2560, 0)
+
+[node name="ElevatorDown2" parent="Hospital/Floor2" instance=ExtResource("6_elevbtn")]
+position = Vector2(1100, 540)
+target_floor = 1
+
+[node name="NavRight0to1_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(1200, 480)
+target_floor = 2
+target_room = 1
+label_text = "→"
+
+[node name="NavLeft1to0_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(1340, 480)
+target_floor = 2
+target_room = 0
+label_text = "←"
+
+[node name="NavRight1to2_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(2480, 480)
+target_floor = 2
+target_room = 2
+label_text = "→"
+
+[node name="NavLeft2to1_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(2600, 480)
+target_floor = 2
+target_room = 1
+label_text = "←"
+
+[node name="Characters" type="Node2D" parent="."]
+
+[node name="Bunny1" parent="Characters" instance=ExtResource("3_char")]
+position = Vector2(300, 400)
+data = SubResource("CharacterData_bunny1")
+
+[node name="UI" type="CanvasLayer" parent="."]
+
+[node name="HUD" parent="UI" instance=ExtResource("4_hud")]
+
+[node name="SettingsMenu" parent="UI" instance=ExtResource("5_settings")]
+```
+
+- [ ] **Step 3: Commit and push**
+
+```bash
+cd "F:/Development/_gameDev/Cozypaw-Hospital"
+git add scenes/main/Main.tscn
+git commit -m "feat(floor2): wire up all three second-floor rooms with navigation arrows"
+git push origin develop
+```
+
+---
+
+## Self-Review: Spec Coverage Check
+
+| Sprint 11-13 requirement | Covered by |
+|--------------------------|-----------|
+| Ultraschall (sanfte Herzschlag-Animation) | Task 1: UltrasoundMachine with looping scale tween on HeartbeatDot; Task 4: Ultrasound room |
+| Kreißsaal (Mama kommt rein, Baby ist da) | Task 2: DeliveryBed 4-state FSM (tap → mama slides in → baby fades in → tap → reset); Task 5: DeliveryRoom |
+| Säuglingsstation mit Wiegen | Task 3: Cradle with pendulum rotation; Task 6: Nursery with 3 Cradle instances on a rail |
+| All rooms accessible via elevator + horizontal nav | Task 7: Main.tscn with 4 nav arrows for 2 boundaries + ElevatorDown2 |
+| Keine Gift-Mechaniken (product principle) | All interactive objects: GelBottle, Blanket, FlowerVase, BabyBlanket, TeddyBear, MilkBottle — all safe/positive |
+
+**Placeholder scan:** All code blocks complete. No TBD or TODO. Node paths referenced in scripts match scenes:
+- `ultrasound_machine.gd` → `"HeartbeatDot"` — exists as direct child of UltrasoundMachine ✓
+- `delivery_bed.gd` → `"Mama"` (Node2D), `"Baby"` (Node2D) — both exist as direct children of DeliveryBed ✓
+- `cradle.gd` → rotates `self` — no node path lookup needed ✓
+
+**Type consistency:**
+- `_on_mama_arrived()` used as `tween.finished.connect(_on_mama_arrived)` — method callable, matches function signature ✓
+- `Baby.modulate:a` tweened as float — `modulate` is Color, `:a` accesses the alpha channel as float ✓
+- `MAMA_OFFSCREEN_X = -600.0` used in `_ready()` and `_start_reset()` — consistent ✓
+- `MAMA_PARKED_X = -100.0` used only in `_start_arrival()` ✓
+- `rotation_degrees` tweened as float (ROCK_ANGLE = 15.0) — matches `self.rotation_degrees` property type ✓
+
+**Floor2 room count:** 3 rooms (not 4). Nav arrows: 4 total (2 boundaries × 2 directions). ElevatorDown2 only (no ElevatorUp2 — Floor 2 is the top floor). ✓
+
+---
+
+## Smoke Test Checklist (manual, on device after completion)
+
+- [ ] Elevator from Floor 1 lands at Floor 2 Ultrasound room
+- [ ] Heartbeat animation starts automatically on entering Ultrasound room (green dot pulses every ~0.84s)
+- [ ] "→" navigates Floor 2: Ultrasound → DeliveryRoom → Nursery and back with "←"
+- [ ] No "→" arrow visible in Nursery room (no room 3)
+- [ ] Tapping DeliveryBed: Mama slides in from left, Baby appears
+- [ ] Tapping DeliveryBed again: Mama slides out left, Baby disappears
+- [ ] Tapping DeliveryBed during animation: nothing happens (state guard)
+- [ ] Tapping any Cradle: cradle rocks (swings ±15°, returns to center)
+- [ ] Tapping Cradle during rocking: nothing (state guard)
+- [ ] All interactive objects (GelBottle, Blanket, FlowerVase, BabyBlanket, TeddyBear, MilkBottle) bounce on tap
+- [ ] Elevator Down from Floor 2 → Floor 1 XRay room
+- [ ] Bunny can be dragged to Floor 2

scenes/main/Main.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=17 format=3 uid="uid://cozypaw_main"]
+[gd_scene load_steps=20 format=3 uid="uid://cozypaw_main"]
 
 [ext_resource type="Script" path="res://scripts/main/main.gd" id="1_main"]
 [ext_resource type="PackedScene" path="res://scenes/rooms/floor0/Reception.tscn" id="2_reception"]
@@ -15,6 +15,9 @@
 [ext_resource type="PackedScene" path="res://scenes/rooms/floor1/Pharmacy.tscn" id="13_pharmacy"]
 [ext_resource type="PackedScene" path="res://scenes/rooms/floor1/Lab.tscn" id="14_lab"]
 [ext_resource type="PackedScene" path="res://scenes/rooms/floor1/PatientRoom.tscn" id="15_patientroom"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor2/Ultrasound.tscn" id="16_ultrasound"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor2/DeliveryRoom.tscn" id="17_delivery"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor2/Nursery.tscn" id="18_nursery"]
 
 [sub_resource type="Resource" id="CharacterData_bunny1"]
 script = ExtResource("7_chardata")
@@ -151,28 +154,43 @@ label_text = "←"
 [node name="Floor2" type="Node2D" parent="Hospital"]
 position = Vector2(0, -1440)
 
-[node name="Background" type="ColorRect" parent="Hospital/Floor2"]
+[node name="Ultrasound" parent="Hospital/Floor2" instance=ExtResource("16_ultrasound")]
-color = Color(0.96, 0.88, 0.96, 1)
-size = Vector2(1280, 720)
 position = Vector2(0, 0)
 
-[node name="FloorLabel" type="Label" parent="Hospital/Floor2"]
+[node name="DeliveryRoom" parent="Hospital/Floor2" instance=ExtResource("17_delivery")]
-offset_left = 560.0
+position = Vector2(1280, 0)
-offset_top = 300.0
-offset_right = 720.0
-offset_bottom = 360.0
-text = "2. OG"
-theme_override_font_sizes/font_size = 32
 
-[node name="FloorRect" type="ColorRect" parent="Hospital/Floor2"]
+[node name="Nursery" parent="Hospital/Floor2" instance=ExtResource("18_nursery")]
-color = Color(0.88, 0.80, 0.68, 1)
+position = Vector2(2560, 0)
-size = Vector2(1280, 100)
-position = Vector2(0, 620)
 
 [node name="ElevatorDown2" parent="Hospital/Floor2" instance=ExtResource("6_elevbtn")]
-position = Vector2(1200, 360)
+position = Vector2(1100, 540)
 target_floor = 1
 
+[node name="NavRight0to1_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(1200, 480)
+target_floor = 2
+target_room = 1
+label_text = "→"
+
+[node name="NavLeft1to0_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(1340, 480)
+target_floor = 2
+target_room = 0
+label_text = "←"
+
+[node name="NavRight1to2_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(2480, 480)
+target_floor = 2
+target_room = 2
+label_text = "→"
+
+[node name="NavLeft2to1_F2" parent="Hospital/Floor2" instance=ExtResource("11_navarrow")]
+position = Vector2(2600, 480)
+target_floor = 2
+target_room = 1
+label_text = "←"
+
 [node name="Characters" type="Node2D" parent="."]
 
 [node name="Bunny1" parent="Characters" instance=ExtResource("3_char")]

scenes/objects/Cradle.tscn

@@ -0,0 +1,31 @@
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_cradle"]
+
+[ext_resource type="Script" path="res://scripts/objects/cradle.gd" id="1_cradle"]
+
+[node name="Cradle" type="Node2D"]
+script = ExtResource("1_cradle")
+
+[node name="SuspensionLeft" type="ColorRect" parent="."]
+color = Color(0.75, 0.65, 0.50, 1)
+size = Vector2(4, 50)
+position = Vector2(-25, 0)
+
+[node name="SuspensionRight" type="ColorRect" parent="."]
+color = Color(0.75, 0.65, 0.50, 1)
+size = Vector2(4, 50)
+position = Vector2(21, 0)
+
+[node name="CradleBasket" type="ColorRect" parent="."]
+color = Color(0.88, 0.82, 0.72, 1)
+size = Vector2(70, 40)
+position = Vector2(-35, 50)
+
+[node name="CradleRim" type="ColorRect" parent="."]
+color = Color(0.95, 0.90, 0.82, 1)
+size = Vector2(70, 8)
+position = Vector2(-35, 46)
+
+[node name="BabyBlanket" type="ColorRect" parent="."]
+color = Color(0.90, 0.84, 0.96, 1)
+size = Vector2(58, 22)
+position = Vector2(-29, 56)

scenes/objects/DeliveryBed.tscn

@@ -0,0 +1,47 @@
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_deliverybed"]
+
+[ext_resource type="Script" path="res://scripts/objects/delivery_bed.gd" id="1_deliverybed"]
+
+[node name="DeliveryBed" type="Node2D"]
+script = ExtResource("1_deliverybed")
+
+[node name="BedFrame" type="ColorRect" parent="."]
+color = Color(0.85, 0.85, 0.90, 1)
+size = Vector2(260, 50)
+position = Vector2(-130, -50)
+
+[node name="BedPillow" type="ColorRect" parent="."]
+color = Color(0.96, 0.96, 1.0, 1)
+size = Vector2(80, 50)
+position = Vector2(-130, -100)
+
+[node name="BedLeg1" type="ColorRect" parent="."]
+color = Color(0.70, 0.70, 0.76, 1)
+size = Vector2(14, 120)
+position = Vector2(-120, 0)
+
+[node name="BedLeg2" type="ColorRect" parent="."]
+color = Color(0.70, 0.70, 0.76, 1)
+size = Vector2(14, 120)
+position = Vector2(106, 0)
+
+[node name="Mama" type="Node2D" parent="."]
+position = Vector2(-600, 0)
+
+[node name="MamaBody" type="ColorRect" parent="Mama"]
+color = Color(0.92, 0.75, 0.65, 1)
+size = Vector2(60, 100)
+position = Vector2(-30, -100)
+
+[node name="MamaHead" type="ColorRect" parent="Mama"]
+color = Color(0.92, 0.75, 0.65, 1)
+size = Vector2(50, 50)
+position = Vector2(-25, -150)
+
+[node name="Baby" type="Node2D" parent="."]
+position = Vector2(0, -80)
+
+[node name="BabyBody" type="ColorRect" parent="Baby"]
+color = Color(0.96, 0.88, 0.82, 1)
+size = Vector2(40, 30)
+position = Vector2(-20, -15)

scenes/objects/UltrasoundMachine.tscn

@@ -0,0 +1,34 @@
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_ultrasoundmachine"]
+
+[ext_resource type="Script" path="res://scripts/objects/ultrasound_machine.gd" id="1_ultrasound"]
+
+[node name="UltrasoundMachine" type="Node2D"]
+script = ExtResource("1_ultrasound")
+
+[node name="MachineBody" type="ColorRect" parent="."]
+color = Color(0.68, 0.70, 0.76, 1)
+size = Vector2(80, 160)
+position = Vector2(-40, -160)
+
+[node name="ScreenFrame" type="ColorRect" parent="."]
+color = Color(0.30, 0.32, 0.36, 1)
+size = Vector2(68, 52)
+position = Vector2(-34, -152)
+
+[node name="Screen" type="ColorRect" parent="."]
+color = Color(0.06, 0.08, 0.12, 1)
+size = Vector2(60, 44)
+position = Vector2(-30, -148)
+
+[node name="HeartbeatDot" type="Node2D" parent="."]
+position = Vector2(0, -126)
+
+[node name="HeartbeatShape" type="ColorRect" parent="HeartbeatDot"]
+color = Color(0.40, 0.95, 0.60, 1)
+size = Vector2(12, 12)
+position = Vector2(-6, -6)
+
+[node name="Probe" type="ColorRect" parent="."]
+color = Color(0.55, 0.57, 0.62, 1)
+size = Vector2(14, 80)
+position = Vector2(-7, -30)

scenes/rooms/floor2/DeliveryRoom.tscn

@@ -0,0 +1,38 @@
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_deliveryroom"]
+
+[ext_resource type="PackedScene" path="res://scenes/objects/InteractiveObject.tscn" id="1_iobj"]
+[ext_resource type="PackedScene" path="res://scenes/objects/DeliveryBed.tscn" id="2_deliverybed"]
+
+[node name="DeliveryRoom" type="Node2D"]
+
+[node name="Background" type="ColorRect" parent="."]
+color = Color(0.98, 0.92, 0.94, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="Floor" type="ColorRect" parent="."]
+color = Color(0.90, 0.82, 0.76, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="WallLeft" type="ColorRect" parent="."]
+color = Color(0.96, 0.90, 0.92, 1)
+size = Vector2(40, 620)
+position = Vector2(0, 0)
+
+[node name="WallRight" type="ColorRect" parent="."]
+color = Color(0.96, 0.90, 0.92, 1)
+size = Vector2(40, 620)
+position = Vector2(1240, 0)
+
+[node name="CharacterSpawn" type="Marker2D" parent="."]
+position = Vector2(160, 490)
+
+[node name="DeliveryBed" parent="." instance=ExtResource("2_deliverybed")]
+position = Vector2(540, 490)
+
+[node name="FlowerVase" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(1020, 540)
+
+[node name="BabyBlanket" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(880, 540)

scenes/rooms/floor2/Nursery.tscn

@@ -0,0 +1,49 @@
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_nursery"]
+
+[ext_resource type="PackedScene" path="res://scenes/objects/InteractiveObject.tscn" id="1_iobj"]
+[ext_resource type="PackedScene" path="res://scenes/objects/Cradle.tscn" id="2_cradle"]
+
+[node name="Nursery" type="Node2D"]
+
+[node name="Background" type="ColorRect" parent="."]
+color = Color(0.96, 0.96, 0.84, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="Floor" type="ColorRect" parent="."]
+color = Color(0.88, 0.84, 0.70, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="WallLeft" type="ColorRect" parent="."]
+color = Color(0.94, 0.94, 0.82, 1)
+size = Vector2(40, 620)
+position = Vector2(0, 0)
+
+[node name="WallRight" type="ColorRect" parent="."]
+color = Color(0.94, 0.94, 0.82, 1)
+size = Vector2(40, 620)
+position = Vector2(1240, 0)
+
+[node name="CradleRail" type="ColorRect" parent="."]
+color = Color(0.75, 0.65, 0.50, 1)
+size = Vector2(800, 12)
+position = Vector2(200, 228)
+
+[node name="CharacterSpawn" type="Marker2D" parent="."]
+position = Vector2(160, 490)
+
+[node name="Cradle1" parent="." instance=ExtResource("2_cradle")]
+position = Vector2(340, 240)
+
+[node name="Cradle2" parent="." instance=ExtResource("2_cradle")]
+position = Vector2(600, 240)
+
+[node name="Cradle3" parent="." instance=ExtResource("2_cradle")]
+position = Vector2(860, 240)
+
+[node name="TeddyBear" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(1100, 540)
+
+[node name="MilkBottle" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(960, 540)

scenes/rooms/floor2/Ultrasound.tscn

@@ -0,0 +1,53 @@
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_ultrasound"]
+
+[ext_resource type="PackedScene" path="res://scenes/objects/InteractiveObject.tscn" id="1_iobj"]
+[ext_resource type="PackedScene" path="res://scenes/objects/UltrasoundMachine.tscn" id="2_ultrasound"]
+
+[node name="Ultrasound" type="Node2D"]
+
+[node name="Background" type="ColorRect" parent="."]
+color = Color(0.92, 0.90, 0.96, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="Floor" type="ColorRect" parent="."]
+color = Color(0.80, 0.78, 0.84, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="WallLeft" type="ColorRect" parent="."]
+color = Color(0.90, 0.88, 0.94, 1)
+size = Vector2(40, 620)
+position = Vector2(0, 0)
+
+[node name="WallRight" type="ColorRect" parent="."]
+color = Color(0.90, 0.88, 0.94, 1)
+size = Vector2(40, 620)
+position = Vector2(1240, 0)
+
+[node name="ExamTable" type="ColorRect" parent="."]
+color = Color(0.84, 0.86, 0.90, 1)
+size = Vector2(340, 40)
+position = Vector2(300, 490)
+
+[node name="ExamTableLeg1" type="ColorRect" parent="."]
+color = Color(0.65, 0.68, 0.74, 1)
+size = Vector2(16, 130)
+position = Vector2(320, 530)
+
+[node name="ExamTableLeg2" type="ColorRect" parent="."]
+color = Color(0.65, 0.68, 0.74, 1)
+size = Vector2(16, 130)
+position = Vector2(608, 530)
+
+[node name="CharacterSpawn" type="Marker2D" parent="."]
+position = Vector2(160, 490)
+
+[node name="UltrasoundMachine" parent="." instance=ExtResource("2_ultrasound")]
+position = Vector2(780, 490)
+
+[node name="GelBottle" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(920, 450)
+
+[node name="Blanket" parent="." instance=ExtResource("1_iobj")]
+position = Vector2(480, 450)

scripts/objects/cradle.gd

@@ -0,0 +1,38 @@
+## Cradle — rocks with a pendulum rotation when tapped.
+class_name Cradle extends Node2D
+
+enum State { IDLE, ROCKING }
+
+const ROCK_ANGLE: float = 15.0
+const ROCK_DURATION: float = 0.5
+const BUTTON_HALF_SIZE: float = 80.0
+
+var _state: State = State.IDLE
+
+
+func _input(event: InputEvent) -> void:
+	if _state != State.IDLE:
+		return
+	var screen_pos: Vector2
+	if event is InputEventScreenTouch and event.pressed:
+		screen_pos = event.position
+	elif event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+		screen_pos = event.position
+	else:
+		return
+	var canvas_transform: Transform2D = get_viewport().get_canvas_transform()
+	var world_pos: Vector2 = canvas_transform.affine_inverse() * screen_pos
+	var local_pos: Vector2 = to_local(world_pos)
+	if abs(local_pos.x) <= BUTTON_HALF_SIZE and abs(local_pos.y) <= BUTTON_HALF_SIZE:
+		_start_rocking()
+
+
+func _start_rocking() -> void:
+	_state = State.ROCKING
+	var tween: Tween = create_tween()
+	tween.set_ease(Tween.EASE_IN_OUT)
+	tween.set_trans(Tween.TRANS_SINE)
+	tween.tween_property(self, "rotation_degrees", ROCK_ANGLE, ROCK_DURATION)
+	tween.tween_property(self, "rotation_degrees", -ROCK_ANGLE, ROCK_DURATION)
+	tween.tween_property(self, "rotation_degrees", 0.0, ROCK_DURATION * 0.5)
+	tween.finished.connect(func() -> void: _state = State.IDLE)

scripts/objects/delivery_bed.gd

@@ -0,0 +1,82 @@
+## DeliveryBed — tap to animate mama arriving and baby appearing; tap again to reset.
+class_name DeliveryBed extends Node2D
+
+enum State { IDLE, MAMA_ARRIVING, COMPLETE, RESETTING }
+
+const MAMA_OFFSCREEN_X: float = -600.0
+const MAMA_PARKED_X: float = -100.0
+const ARRIVE_DURATION: float = 1.0
+const BABY_FADE_DURATION: float = 0.6
+const RESET_DURATION: float = 0.8
+const BUTTON_HALF_WIDTH: float = 120.0
+const BUTTON_HALF_HEIGHT: float = 40.0
+
+var _state: State = State.IDLE
+
+
+func _ready() -> void:
+	var mama: Node2D = get_node_or_null("Mama") as Node2D
+	if mama != null:
+		mama.position.x = MAMA_OFFSCREEN_X
+	var baby: Node2D = get_node_or_null("Baby") as Node2D
+	if baby != null:
+		baby.modulate.a = 0.0
+
+
+func _input(event: InputEvent) -> void:
+	if _state == State.MAMA_ARRIVING or _state == State.RESETTING:
+		return
+	var screen_pos: Vector2
+	if event is InputEventScreenTouch and event.pressed:
+		screen_pos = event.position
+	elif event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+		screen_pos = event.position
+	else:
+		return
+	var canvas_transform: Transform2D = get_viewport().get_canvas_transform()
+	var world_pos: Vector2 = canvas_transform.affine_inverse() * screen_pos
+	var local_pos: Vector2 = to_local(world_pos)
+	if abs(local_pos.x) <= BUTTON_HALF_WIDTH and abs(local_pos.y) <= BUTTON_HALF_HEIGHT:
+		if _state == State.IDLE:
+			_start_arrival()
+		elif _state == State.COMPLETE:
+			_start_reset()
+
+
+func _start_arrival() -> void:
+	_state = State.MAMA_ARRIVING
+	var mama: Node2D = get_node_or_null("Mama") as Node2D
+	if mama == null:
+		_state = State.IDLE
+		return
+	var tween: Tween = create_tween()
+	tween.set_ease(Tween.EASE_OUT)
+	tween.set_trans(Tween.TRANS_QUAD)
+	tween.tween_property(mama, "position:x", MAMA_PARKED_X, ARRIVE_DURATION)
+	tween.finished.connect(_on_mama_arrived)
+
+
+func _on_mama_arrived() -> void:
+	_state = State.COMPLETE
+	var baby: Node2D = get_node_or_null("Baby") as Node2D
+	if baby == null:
+		return
+	var tween: Tween = create_tween()
+	tween.tween_property(baby, "modulate:a", 1.0, BABY_FADE_DURATION)
+
+
+func _start_reset() -> void:
+	_state = State.RESETTING
+	var baby: Node2D = get_node_or_null("Baby") as Node2D
+	if baby != null:
+		var fade_tween: Tween = create_tween()
+		fade_tween.tween_property(baby, "modulate:a", 0.0, BABY_FADE_DURATION)
+	var mama: Node2D = get_node_or_null("Mama") as Node2D
+	if mama == null:
+		_state = State.IDLE
+		return
+	var slide_tween: Tween = create_tween()
+	slide_tween.set_ease(Tween.EASE_IN)
+	slide_tween.set_trans(Tween.TRANS_QUAD)
+	slide_tween.tween_property(mama, "position:x", MAMA_OFFSCREEN_X, RESET_DURATION)
+	slide_tween.finished.connect(func() -> void: _state = State.IDLE)

scripts/objects/ultrasound_machine.gd

@@ -0,0 +1,23 @@
+## UltrasoundMachine — displays a continuous heartbeat pulse on the screen.
+class_name UltrasoundMachine extends Node2D
+
+const BEAT_RISE_DURATION: float = 0.12
+const BEAT_FALL_DURATION: float = 0.12
+const BEAT_INTERVAL: float = 0.60
+const BEAT_SCALE_PEAK: Vector2 = Vector2(1.5, 1.5)
+const BEAT_SCALE_REST: Vector2 = Vector2(1.0, 1.0)
+
+
+func _ready() -> void:
+	_start_heartbeat_loop()
+
+
+func _start_heartbeat_loop() -> void:
+	var dot: Node2D = get_node_or_null("HeartbeatDot") as Node2D
+	if dot == null:
+		return
+	var tween: Tween = create_tween()
+	tween.set_loops()
+	tween.tween_property(dot, "scale", BEAT_SCALE_PEAK, BEAT_RISE_DURATION)
+	tween.tween_property(dot, "scale", BEAT_SCALE_REST, BEAT_FALL_DURATION)
+	tween.tween_interval(BEAT_INTERVAL)